16861990419 has 12 divisors (see below), whose sum is σ = 24950262792. Its totient is φ = 10967148000.

The previous prime is 16861990417. The next prime is 16861990451. The reversal of 16861990419 is 91409916861.

16861990419 is a `hidden beast` number, since 1 + 6 + 8 + 619 + 9 + 0 + 4 + 19 = 666.

It is not a de Polignac number, because 16861990419 - 2¹ = 16861990417 is a prime.

It is a super-3 number, since 3×16861990419³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (16861990417) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22847857 + ... + 22848594.

It is an arithmetic number, because the mean of its divisors is an integer number (2079188566).

Almost surely, 2^16861990419 is an apocalyptic number.

16861990419 is a deficient number, since it is larger than the sum of its proper divisors (8088272373).

16861990419 is a wasteful number, since it uses less digits than its factorization.

16861990419 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45696498 (or 45696495 counting only the distinct ones).

The product of its (nonzero) digits is 839808, while the sum is 54.

The spelling of 16861990419 in words is "sixteen billion, eight hundred sixty-one million, nine hundred ninety thousand, four hundred nineteen".